How to get tarnish off of a gold necklace

Gold is made of gold necklace, or gold ring, or gold earrings, or gold bracelet and other ornaments from ancient to now, and gold is extremely soft metal, so gentle cleaning procedures can maintain the quality of the necklace. If your gold necklace tarnishes, you can use a couple of household materials, only a few minutes, your gold necklace looks like a new one.
The first: you prepare a bowl with warm water and add dishwashing liquid to the basin. After preparation of them, you can place the gold necklace in the solution. A few minutes later, rub the surfaces of the necklaces lightly.
The second: after a few minutes, you can remove your gold necklace from the soapy water and scrub it carefully with a soft toothbrush. Never use toothpaste or baking soda. These are too abrasive and will cause imperfections.
The third: if you rinse your gold necklace under warm tap water cleanly, more important is: remove all soap residues. Avoid using paper towels or other wood based cloths.
The fourth: let your gold necklace air dry overnight. Moisture is the main cause of tarnishing, and air drying in order to make sure the necklace is completely dry before replacing in a dank jewelry box.
The last: if you don’t want to wear it, you should store the gold necklace in a clean and sanitized location.
Hope your gold necklace can be kept in good condition and can be kept for longer time.